Hog Slap Hammer

From F. T. Hill Museum

Accession Number 2017-07-09-03

Date 1931

Description Hog Slap Shoulder Tattoo. Used to mark pigs when going for slaughter. Patent was issued June 2, 1931 to Swift & Co. Plates in centre can be moved to change sequence-5 different letters or numbers. Stable plates on both outside edges with letters K and O. 

Materials Wooden Handle Cast Iron head 4 plates with sharp pins made of stainless steel